Exam3 - Study Guide - Ape Behavior Group Structures 1....

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Ape Behavior Group Structures 1. Monogamous (Gibbons) a. One adult female, one adult male and offspring b. Territorial c. Intersexual competition d. Same size, so no physical hierarchy 2. Solitary/ Noyau (Orangutans) a. Individual males have ranges that overlap several adult female ranges b. Gender defends territories against same gender 3. Age-Graded Male Groups (Gorilla) a. One dominant adult male with many females and their offspring b. Juvenile males are blackbacks i. Run off by silverback when they get old enough ii. Many solitary males in forest 4. Fission/ Fusion Groups (Chimps) a. Size and composition is fluid b. Unrelated males bond together c. Females and offspring with family ties have own subgroup i. Sons leave, daughters stay d. Least stable Bonobos Mate even when the female is not in estrus Overt sexuality is an integral part of society Sex settles disputes o Linked to agreements among females to share food resources o Serve as a socially overt announcement and reaffirmation of standing (hierarchy)
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Exam3 - Study Guide - Ape Behavior Group Structures 1....

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